Roy and Gayle€™s Fix-It Shop purchased a new automated inventory control software application, and they wanted to put ROPs on all of their purchased tools and supplies. After forecasting the demand for items for the upcoming year, they were ready to start calculating ROPs. Three of the items are shown below, along with the forecasted annual demands, purchase lead times, lead time demand standard deviation levels, and desired service levels. Calculate the ROPs for the three items and their safety stock levels. Assume the store is open 365 days per year. 

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STD. DEV. ANNUAL REQUIRED LEADTIME SERV. LEVEL OF L.T.D. DEMAND ITEM Duct Tape 12 days 6 rolls 99 % 2300 rolls Super Glue 1800 bottles 6 days 4 bottles 90 % Hammer 650 hammers 21 days 3 hammers 80%